<html>
<head>
</head>
    <meta charset="utf-8">
    <title>IFE JavaScript Task 01</title>
    <script src="taskr.js"></script>
  </head>
<body onload="load()">
    <label>单个数字：<input id="1" type="text"></label><br><br>
    <label>0~255的整数：<input id="2" type="text"></label><br><br>
    <label>字符串"."，单个点：<input id="3" type="text"></label><br><br>
    <label>IP地址：<input id="4" type="text"></label><br><br>
    <button type="submit">submit</button>
</body>
</html>